thanks, thats a good idea.i add it to my list of new features for vosyr.maybe it will find it's way into the next release.
If a true piano roll isn't feasible, even just the chromatic entry that the volca currently has would be fine. See This PhenQ Reviews For instance, clicking on the current motion sequencing bars but having the bar grid snap to chromatic divisons (like when you hold function and tweak the speed knob on the volca). Ideally you would have quantized scales as well haha but that's probably asking for too much.